1. Goethe University Frankfurt, Institute of Geosciences, 60438 Frankfurt am Main, Germany
2. Department of Physics, Federal University of Santa Catarina, CEP 88040-900, Florianópolis, Brazil
3. Department of Geosciences, University of Potsdam, 14476 Potsdam, Germany
4. Deutsches Elektronen-Synchrotron DESY, Photon Science, 22607 Hamburg, Germany
5. Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, 14473 Potsdam, Germany
6. Oxford Instruments GmbH, 65205 Wiesbaden, Germany
7. Goethe University Frankfurt, Institute of Physics, 60438 Frankfurt am Main, Germany
8. GSI Helmholtz Center for Heavy Ion Research, 64291 Darmstadt, Germany
9. Technical University Darmstadt, 64289 Darmstadt, Germany